Wil Tirion

MARK R. CHARTRAND served as the Executive Director of the National Space Institute--now called the National Space Society--from 1980 to 1984. He received his Ph.D. in Astronomy from Case Western Reserve University.

WIL TIRION is a reknowned Dutch uranographer. He is the author of Sky Atlas 2000.0.

GARY MECHLER holds a Ph.D. in Astronomy from Case Western Reserve University. He teaches at Pima Community College in Tucson, Arizona.